1061531025 has 24 divisors (see below), whose sum is σ = 1758961824. Its totient is φ = 564892800.

The previous prime is 1061531021. The next prime is 1061531027. The reversal of 1061531025 is 5201351601.

It is not a de Polignac number, because 1061531025 - 2² = 1061531021 is a prime.

It is a super-2 number, since 2×1061531025² = 2253696234075101250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1061530986 and 1061531004.

It is not an unprimeable number, because it can be changed into a prime (1061531021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18790 + ... + 49760.

It is an arithmetic number, because the mean of its divisors is an integer number (73290076).

Almost surely, 2^1061531025 is an apocalyptic number.

1061531025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1061531025 is a deficient number, since it is larger than the sum of its proper divisors (697430799).

1061531025 is a wasteful number, since it uses less digits than its factorization.

1061531025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31441 (or 31436 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1061531025 is about 32581.1452376984. The cubic root of 1061531025 is about 1020.1034833493.

Adding to 1061531025 its reverse (5201351601), we get a palindrome (6262882626).

The spelling of 1061531025 in words is "one billion, sixty-one million, five hundred thirty-one thousand, twenty-five".